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No Model.)

J. C. WANDS.

METALLIC ROOFING. No. 319,869. Patnted June 9, 188.5.

Nirnn STATES PATENT Fries.

JOHN CLARK WANDS, OF ST. LOUIS, MISSOURI.

METALLIC Boor-ING.

SPECIFICATION forming part of Letters Patent No. 319,869, dated June 9, 1885.

Application filed December 26, 1884. (No model.) d

' To all whom t may concern,.-

Be it known that I, JOHN O. WANDS, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Metallic Car- Roofing; and I do declare the following to be a full, clear, and exact description of the invention, suoli as will enable others skilled. in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Figure l of the drawings is a representation of this invention and is a cross-section. Fig. 2 is a vertical section taken through where the broken line x x is marked on Fig. l. Fig. 3 is a top view showingl portions broken away. Fig. 4 is a modification shown in perspective section. Fig. 5 is a detail.

This invention has relation to ventilated roofs for railwaycars; and it consists in the construction and novel arrangement of devices, as hereinafter set forth, and pointed out in the appended claims.

In the accompanying drawings,the letter A designates the transverse beams or carlings,

and B is the solid central purlin extending longitudinally and secured upon the carlings above the level of the lateral purlins C D, which are let into saidcarlings.

E represents the lateral roof timbers, to which the side walls of the car are attached.

Upon the purlins O and D, and extending from the lateral roof-timbers E to the second purlin, C, and covering thelatter, are the metallic plates F, which are corrugated at their edges in the direction across the car, as shown at G, and also have one or more intermediate corrugations, H, in order to give the plates rigidity. The corrugated edges G of these short side plates are lapped over the rounded battens K, which are secured to the purlins and corner timbers.

L represents a central opening between the short plates F under the central purlin. Upon the lateral plates over the lateral purlins,are placed the longitudinal rafters N, to which the roof-boards P are fastened, said roof-boards extending to the central purlin, B, and uniting upon the same covering in the opening L between the lateral plates below. Upon the inner or meeting portions of the roof-boards, along the central line, is placed the center plate, S, which is sufficiently wide to extend laterally beyond the inner edges of the lateral plates F, and is yet narrow enough to be protected by the running board V, which is laid above upon supports m, so that the middle plate, S, is protected both above and below, and may be made of several sheets of thin iron, and as the lateral plates F are not required to extend to the center of the roof they can also be made of sheets of comparatively small size. By this construction the car is freely ventilated through the roof, the circulation passing by the central opening between the lateral plates and the central purlin and by thelateral passages above the lateral plates outward to the lateral lines Z at the edges of 7o the roof.

Having described this invention, what I claim, and desire to secure by Letters Patent,

1. In a car-roof, the combination, with the carlings, of the solid central purlin above the level of the lateral purlins, substantially as specied.

2. The combination, with the purlins and carlings, of the short lateral plates extending to the second purlin, the roof-boards, and the central longitudinal plate under the running board, substantially as specified.

3. The combination, with the carlings and purlins, of the central opening between the lateral plates covered by the roof-boards and the center plate, and the lateral Ventilatingpassages extending from said central opening outward, substantially as specified.

4. The combination, in a car-roof, with the lateral roof-plates separated by a central longitudinal opening, ofthe central longitudinal plate overlapping or extending laterally beyond the inner edges of said lateral roof-plates, substantially as specied.

5. The combination, with the carlings, latera-l purlins, and raised central purlin, of the roof-boards, the short lateral plate below the same, the longitudinal center plate above the same, and the running board covering said center plate, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN CLARK WANDS.

Witnesses:

A. WM. LANGE, L. HALLocK.

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